Pilot's Guide

Garmin G1000 Pilot’s Guide for the Cessna Corvalis/Corvalis TT
190-00552-05 Rev. A
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICESINDEX
536
APPENDIX B
MAGNETIC FIELD VARIATION DATABASE UPDATE
A copy of the current magnetic field variation database (MV DB) is included with the navigation database.
At startup, the system compares this version of the MV DB with that presently being used by each AHRS
(GRS1 and GRS2). If the system determines the MV DB needs to be updated, a prompt is displayed on the
Navigation Map Page, as shown in Figure B-12. Note, in the following example, GRS1 is the first AHRS to
indicate an update is available. In actuality, this is dependent on which AHRS is the first to report status to the
system. GRS2 may be displayed before GRS1. The order is not important, only that both AHRS be updated.
Figure B-12 GRS1 Magnetic Field Variation Database Update Prompt
Loading the magnetic field variation database update:
1) With ‘OK’ highlighted, as seen in Figure B-12, press the ENT Key on the MFD. A progress monitor is displayed
as shown in Figure B-13.
Figure B-13 Uploading Database to GRS1
2) When the upload is complete, the prompt for the next GRS upload is displayed, as seen in Figure B-14.
Figure B-14 GRS2 Magnetic Field Variation Database Update Prompt